Method of making a multiple part anchorage



Dec. 18, 1956 1.. H. MORIN 2,774,135

METHOD OF MAKING A MULTIPLE PART ANCHORAGE Filed Sept. 22, 1952 2Sheets-Sheet l I I :I 12 I I 15 27 INVEN'TOR. 01146 If. Moran Dec.18,1956 H. MORIN 3 METHOD OF MAKING A MULTIPLE PART ANCHORAGE FiledSept. 22, 1952 2 Sheets-Sheet 2 INVENTQR. Zola-s fl/Yamu HTTORNE 2.

United States Patent METHOD OF MAKING A MULTIPLE PART ANCHORAGE Louis H.Morin, Bronx, N. Y. Application September 22, 1952, Serial No. 310,903

2 Claims. (Cl. 29-417) ings on sheet materials of various kinds andclasses;

Still more particularly, the invention deals with a method of formingmembers of the character described, wherein the separate parts of theresulting member are simultaneously formed and united on a wire orstrand and then folded thereon to bring the parts into close proximityto each other to form a member of substantially round cross-sectionalcontour having spaced threaded sections extending longitudinally of atleast part of the bore of said member.

The novel features of the invention will be best understood from thefollowing description, when taken together with the accompanyingdrawing, in which certain embodiments of the invention are disclosedand, in which, the separate parts are designated by suitable referencecharacters in each of the views and in which: 7

Fig. 1 is a diagrammatic face view of one part of a die illustrating theformation of the several parts of an expansion shield on a joiningstrand or wir i Fig. 2 is a section substantially on the line 22 of Fig.l breaking through the uniting wire or strand and omitting parts of theconstruction and also showi in section, forming tools for shaping themembers 'into final assemblage form.

Fig. 3 is a broken 01f side elevation of a shield made according to myinvention, looking in the direction of the arrow 3 of Fig. 4.

Fig. 4 is an end view of the structure as shown in Fig. 3, parts of theconstruction being omitted.

Fig. 5 is an end view of a modified form of product arranged on acoupling strand, the parts assuming a position similar to the shieldsshown in Fig. 2, but omitting the dies.

Fig. 6 is a side view of the product of Fig. 5.

Fig. 7 is an end view of an anchor member made;55

from the structure shown in Figs.'5 and 6; and

Fig. 8 is a section on the broken line 88 of Fig. 7, omitting thebackground showing and also indicating in section a mounting in whichthe member is adapted to be arranged.

In Figs. 1 and 2 of the drawing, I have shown at 10 a die or part of adie having vertically spaced cavities 11, 12 and 13, the cavity 11 beinglocated intermediate the cavities 12 and 13 and these cavities areshaped to form respective parts 14, 15 and 16 of a resulting multiplepart anchorage member, such for example, as an expansion shieldgenerally shown in assembled relationship at 17 in Figs. 3 and 4 of thedrawing. The separate parts 14, 15 and 16 will be shaped so as toproduce, when the parts are assembled, proper alinement of the internalthreads 18 in the bore 19 of the shield, as well as proper alinement ofthe external ribs 20 extending longitudinally of one end portion of theshield. The other end portion 'ice for extending the cast metal or otherinjected moulded material into the respective cavities 11, 12 and 13 andat 25 I have shown carrying lugs in the form of open ring-like members,which lugs are formed upon 'a carrying pin 26 disposed between the dies,said pin being utilized to support the cast parts 14, 15 and 16when thedies are separated and in moving said parts downwardly into a positionbeyond the lower surface 27 of the dies, after which, the dies arepartially closed and the pin 26 is stripped from the lugs by upwardmovement.

When the parts are in the lowered position, they may be simply trimmedin conventional manner to remove the gate or sprue 24 and the lugs 25and the strand 23 sheared at the lower surface 27 of the die. It ispreferred, however, that these parts be positioned between two formingtools 28 and 29, the tool 28 being preferably stationary and the tool 29moved toward and from the tool 28 to fold or form the parts 14, 15 and16 around a mandrel 30. The mandrel 30- has a large diameter portion 31which fits in the bore '32 of the cylindrical body 21, whereas the smalldiameter 33 of the mandrel will fit within the threads 18 of the bore19, so that, when the forming tools 28 and 29 are separated, theresulting expansion shield can drop freely from or be displaced from themandrel as a finished trimmed product.

It will be apparent that the tools 28 and 29 will be of a dimensionwithin the overall length of the shield parts 14, 15 and'16 so as tofacilitate trimming of the gate 24 and lugs 25. The tool 29 can alsoinclude a shearing plate 29' for shearing the strand 23 in the opera-'tion of the tool 29.

It will be apparent that the strand 23 will be of such characteristicsas to hold the parts 14, 15 and 16 in the assembled relationship shownin Figs. 3 and 4 with adjacent surfaces of the parts substantiallyabutting. In this way, the use of the conventional split rings and otherfasteners for holding parts of this type and kind together can bedispensed with.

It will appear from a consideration of Figs. 1 and 3 of'the drawing thatthe bore 19 is tapered, whereas the bore 32 is straight and that theouter surface, on which the ribs 20 are formed, is normallysubstantially straight so as to provide the usual expansion propertiesof the shield in the use thereof as with other devices of this type andkind.

In Figs. 5 to 8, inclusive, I have shown a modified adaptation 'of myinvention, wherein a series of parts 34, 35 and 36 are formed upon awire or strand 37 in the same manner of formation of the parts 14, 15and 16 on the strand 23. However, in the latter figures, an anchoragedevice 38 is formed in the resulting assemblage of the parts by bringingthese parts into abutting engagement with each other and bending thestrand 37 in the manner clearly illustrated in Fig. 7 of the drawing.Here again, the parts have internal threads as at 39, which extend themajor portion of the length of the resulting bore formed between theseparts, one end of the parts having a reduced unthreaded bore 40. Thestrand or wire 37, in the construction shown, is of round crosssectionalform and the outer surface of the respective Patented Dec. 18, 1956'parts 34, '35 and 36 have threads as at 41 and, in bringing the part-stogether in the assemblage orannular rela tionship shown in Fig.7, thethreads 39, as Well as the eads, arerb que ti q P QPeLQli EJJ Q I wit ahrher, ti lb n unders qdi thatl t' q min the)? $sq at si th the. an .-mnb i 38.

of the drawing partlro a sheet pppanelQA-Z threaded socket 43 adap d toreceive ;the],mem 38,

It s. P eier s dlha pnern the th e d 32-. .be p 5 10 tothat bf the otherforeygampleg the thread 32cai1 be' a right hand thread; Whereasfthethread 41 cari be a tit-h nd threatland; i 11 1 vent, e x. =.asi t- 0f}e socket 43;willfbegcgrtesponding i types d W x z t etqa q fnnli ht re uthe of the d isti ct advantages in my improved con;

a s iiby, 2 t st a a l asimpl a r 4 offthe kind under co isi deration.,1

adily ppa nt omt r t .p ms

g the r scribed. V

in tf llyj e ih d, my nv miq awh I ag aim as w k id-fiesi eftq li eiyietters' Pa e 20 pc nt num l J mi. u swe anchor memhersfon a continuouslengtnof l fg in p V ,7 ,.lig,

continuous length, closing the dies angl ea siti ngla 'of threaded partsin spaced side by side relation about said short length of strand byinjecting casting material in one injection step to said dies, saidshort length becoming embedded in said parts, simultaneously forming oneach part during said injection a lug portion in engagement with saidtransfer corg opeping the dies, moving said Pa ts dcmb dded l n thmit fe die y movin said transfercore andiat thefsametime moving a" succeedingshort length of strand between the dies, partially closing the diesabqutthejtransfer ooreand stripping e a er. f m d Por on immi ers sltpatsevering the embeddedleIigth from saidsucc eeding short length, movingsaicl-parts intg-"a circumferential relation 7 with respect to oneanother by bending the embedded length or portions thereof intermediatesaid parts, thereby forming an anchor member, and casting'a succeedingplnralityaof.

and durin -ma d;@ m nnga sever ng, d

lfi la art; mhmmembers roniaicentinue sllen H d 49 was II Yi twe aiamaro el a i pt hl fiaas Q dzd s hav n shQrt length of i said strand, "mpble;;diesi andadjacent d PQab1e tween theadie'sh cavities for formingsaid parts,-

w l i g,

id 7 .Q s gt 'bin t igh t; nd, ehavingone endi PEEQHXzlOiBQQ: Qai aii-icnt ngmus leng closingithefi-a dies and castingaplurality ofthreadedparts in ,spaceda' des de a igmb injgct ng.. cast ng;mater al lnone injection-step Qw'saidja.

out-saidyshort; length of .strandby dies, said short length becomingembedded in.said.parts,.a yltanflquslx QIm B a-QD. achlpartrdur gisaidainificr a uap rt sm Y ngagernenhwith. .said ;tra nsfer 2core,,.

1 2912 5 16 .dicanm in t-s idrari and-embedded length-x .gir iditransferl core and. anthem 7 qcfe edingtshort; length iof'istrandm nthe Ipartiallyclosing thegdies about -the..-

at t m sq g ndi ipn ne'fl c at1 Qm po tiqns, trimming said-parts, se\cerg.theembedded. lengthfrom said succeeding shgrtilengthamovingsaidpartssjntqt 9 t l t r r nti liir la o 1 byi bending theemheddedllength at PQI'tiOHSQthCIfiOfLilltClTg:

mediate saicgparts thereby. forming; an.- anchor ,membe1"-,.and-casting;slrcceeding plyrality of IhIEIddirP3flS aboutv saidsucceeding short length-of strand;sduringrsaidatrimau V ne! 1'5PL6lf gand bend a eps. V

' References Cited in the :file ofthis patent ena-34 UNITED STATESPATENTS? Y ,Apr. 15,1 19 1 i Sept; 8,-

Ange- 1., y-j

